Figure 9-10 Troubleshooting Process For Charging Failures - Huawei U8815 Maintenance Manual

U8815
Maintenance Manual

Figure 9-10 Troubleshooting process for charging failures

Table 9-2 describes the signals in the circuit diagram in this section.
Issue 1.0 (2012-02-13)
After being connected to
a charger, the handset
cannot be charged.
Does the charger
work properly?
Y
Does the J103 USB
connector need to
be soldered?
N
Is voltage available on C1014?
Y
Is the
output voltage VPH_PWR
available on the U1001
charging chip?
Y
Does pin 3 of
Q201 provide output?
Y
Is the J1501 battery
connector damaged?
N
Is the battery damaged?
N
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9 Principles and Failure Analysis
N
Replace the charger.
Y
Solder J103.
Check the fuse F101 and
N
the electromagnetic
interface bead LB301.
N
Replace U1001.
N
Replace Q201.
Replace the J1501
Y
battery connector.
Y
Replace the battery.
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